Best Gear Oil

Asked by Mar 23, 2016 at 11:46 AM about the 2003 Subaru Impreza 2.5 RS

Question type: Maintenance & Repair

Impreza 2.5 RS manual shift sound is coarse, so I
checked the gear oil (yellow dipstick on the left (if
you open the hood perspective) or right side of car)
and it was very low. So I won't drive it until I fill it
with gear oil. I'm at 122,000 miles.

My questions are:

1). what's the best gear oil to buy?
2). from where?
3). How much gear oil should I fill.

I heard Redline 75w90 is the way to go, but I
wanted to ask Gurus first. (I did try to look for a
thread on this here but maybe I didn't search the
right question. Any insight would be greatly
appreciated!

2 Answers

5,710

Don't waste your money under any circumstances, as the Subie stick trans (and diff) do NOT put much stress on the gear oil. So top it off with any 75 or 80 or 90W molasses and it'll be ok. If what you can see is pretty black maybe you should drain it first and then add the 5qts needed, as it's still an easy and cheap job. I've seen original gear oils last 10+ years in these, so don't sweat it. HOWEVER, if you run too long on very low gear oil you may pick up some noise that might NOT go away with a drain and refill. May still operate quite fine, though. Just save your money, as the higher temp capabilities of RedLine et al our completely wasted on this low temp app.

Best Answer Mark helpful

Thank you so much, so 5 quarts will do because I checked the yellow dipstick and there is ABSOLUTELY NO oil left. So I'll pour in the 5 quarts, right? I read somewhere that it needed 3.7L?

Your Answer

Subaru Impreza Experts

  • #1
    TheSubaruGuruBoston
    Reputation
    970
  • #2
    F_O_R
    Reputation
    610
  • #3
    Nick Eidemiller
    Reputation
    480
View All

Related Models For Sale

Used Subaru Impreza WRX
41 Great Deals out of 1,295 listings starting at $3,999
Used Subaru Outback
393 Great Deals out of 35,029 listings starting at $199
Used Subaru Impreza WRX STI
31 Great Deals out of 709 listings starting at $8,995
Used Subaru Legacy
223 Great Deals out of 15,547 listings starting at $1,690
Used Subaru Forester
379 Great Deals out of 35,876 listings starting at $750
Used Honda Civic
763 Great Deals out of 69,163 listings starting at $1,350
Used Mazda MAZDA3
324 Great Deals out of 26,200 listings starting at $950
Used Toyota Corolla
776 Great Deals out of 54,487 listings starting at $1,500
Used Honda Accord
985 Great Deals out of 59,479 listings starting at $1,099
Used Toyota Camry
913 Great Deals out of 81,893 listings starting at $999
Used BMW 3 Series
1,095 Great Deals out of 33,530 listings starting at $1,000

Used Cars For Sale

2017 Subaru Impreza For Sale
17 Great Deals out of 5,521 listings starting at $15,999
2016 Subaru Impreza For Sale
30 Great Deals out of 662 listings starting at $13,995
2015 Subaru Impreza For Sale
25 Great Deals out of 736 listings starting at $9,850
2014 Subaru Impreza For Sale
42 Great Deals out of 920 listings starting at $8,995
2013 Subaru Impreza For Sale
21 Great Deals out of 574 listings starting at $5,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.